Europium is :
s - block element
p - block element
d - block element
f - block element
D.
f - block element
Europium (Eu) is a f-block element , it belongs to the 4f series and its electronic configuration is [Xe] 4f7 5d0 6s2 .
If hydrogen electrode dipped in two-solution of pH = 3 and pH = 6 and salt bridge is connected , the emf of resulting cell is :
0.177 V
0.3 V
0.052 V
0.104 V